Cutting-block-surfacing machine



R. A. MADDOX.

CUTTING BLOCK SURFACING MACHINE.

APPLICATION FILED SEPT. 11, 1918.

1,369,684. Patented Feb.22-,1921.

. 3 SHEETS-SHEET I 2 IIVVENTOR 20hr? A. flfwidax M A TTORA/E Y R. A. MADDOX.

I C UTTING BLOCK SUBFAGING MACHl-NE.

APPLICATION FILED SEPT. 1!, 191a.

Patented Feb. 22,1921;

3 SHEETS-SHEET 2- Q. INVENTUR Z0567? A. flfmfdaz ATTORNEY R. A. MADDOX. CUTTING BLOCK SURFACING MACHINE.

APPLICATION FILED SEPTIH, 1918.

P e b- 22,1921.

Illllullll A TTORNE Y become uneven and the corners rounded it ROBERT A. MADDOX, 0]? 'LOS 'ANGELE I CHARLES C. CRAWFORD, 015 LOS ANGELES, CALIFORNIA.

eU'rrINe-BLocK-suRrAcInG MACHINE.

- Applicitionhld September To all whom it may concern r Beit known that I, ROBERT 1L MADDOX," a citizen of the United States, residing at- Los Angeles, in the countyv ofLos Angeles and State of California, have invented new and useful Improvements in Cuttlng-Block-j Surfacing Machines, of which'the following is a specification.

This inventlon relates by garment and shoe manufacturers and other industries where blocks or tables are used and their surfaces are sub ected to uneven wear due to the constant contact of cutting knives.

When the surfaces of such blocks or tables is often necessary to load them on a truck and transport them to the-mill to be 'resur-V This. is objectionable inasmuch as they arenecessarily heavyand cumbersome,

and consequently considerable expense is in-'- faced.

volved. a.

It is an object of my. invention tov provide a device forlev'eling and surfacing cutting blocks andtables, which will be simple and efiicient as wellfas light-andcompact, whereby it may be readily transported from shop to shop, set-up, and operated by one man thus avoiding the necessity of removing the table or block to the mill, and thereby reducing to a minimum the time the owner is deprived of the use of the table, as well as j the expense of'the operation.

Other objects of my invention will appear in the'following description, and a will be pointed out in the appended claims. Y j

Referring to the accompanying :draw- Figure 1 represents-a plan viewof my deviceshownas applied to a butcher blocln Fig. 2 israwfront view of the same. a

Fig; A; is a front view of the same." 1Fl gv5 is-a plan viewof the same. lii'g. 6 is a fragmental sectional view taken onTline,6 -'6 of Fig. '47 viewed in the direc r r j I tiori" indicatedby the arrows.

Fig"; 7 is a fragmental sectional View taken Fig. 3; is an enlargedsidewiew of my de-;

face ofthe block'10.: I l

Supported to the carrijlq'e 35 and adapted to be moved along thetracks 32 and 33 and :11,'191s.' Serial nmesas'ao, l

sents a common butcherjblock to which is clamped adjacent its .upper surface a supof transverse" rails 12.;and 13 preferably I 1 formedjof channel iron, disposed in parallel to a device for leveling cutting tables, and is particularly adapted to be used for leveling the surfaces of chopping blocks commonly used in H slaughter houses and butcher shops, as well as the various cutting tables or blocks used porting frame 11, which comprises a pair relation and held firmlytogether by the lonblock;.l0 andis held in parallel relation to there-floor upon which said block stands by enrirdnmgnssienon onions-HALF 'ro j In carryingout my;invention,'1O repre gitudinalspacing bars {14, 15, 16 and 17. The frame '11 is adaptedato surround the the supporting legslS, 19, 2O a'nd'21', which,

Specificat ienofLetters Patent. 22, 1921 are pivoted to the corners of said frame' I .by: the pins 22}. In -'order to properly adjust the frame- 11 with." reference to" the top surface of the block '10, the legs} 18, 19, '20 and. 21, are made adjustable, and to." this end each'of. said legs is providedw with extensions 23, which are provided with aseries of perforations :24 adapted to receivethe bolts 25 which passthrough perfo-' ratlons'ln-the lower ends of legs 18, 19, 20

.andi21 and are clamped by the-butterfly nuts 26 which of said boltsr are threaded onto the :ends

After the frame llhas been adjusted with 1 respect toljthe height of the block 10; it is clamped fil'mlyr thereon by meansof the-set screws 27 whi h are "threaded into the rail '12 and abutagainst the, side of the block 10, the other side-pf said block being, en= gra ed by the rail'13. 4 3

Supported on the rails 12 and tivel-y, 1' and. adapted to slide 'transverselv thereon are the cleats 30 and 31 tov which are secured the longitudinally disposed parallel tracks 32Iand-33; whi h are preferably formed of channel iron.

the sides of vthelrails 12 :and 13. whereby The cleats '30 and 31 are each: provided w thva downwardly projecting ledge 34 ada ted to engage with:

13 .respece said cleats may be roperlv guided on said;

rails. The: cleats 30 and 31 and tracks 32 and 33 constitute-a carriage 35 which may be moved transversely across the upper surlongitudinally of the block 10, is the Blatform 38 provided with the anti-frictional Y rollers 39 adapted to engage between the tracks 32 and 33,fand in order to provide against lateral thrust the platform 38 is also .keyed a pinion h bearing 56 by the, miter gear 54,

Mounted on af'flange 60 formed on the "casting 49 for slidable relation therewith is th'e vertifcal bearing 61 which is disposed dn rectly below the b aring 56. and in'alinement therewith. A vertical groove 62 is formed in V the flange 60 adaptedto receive thetongue 63 formed on the bearing- 61. "The bearing); 61

provided with rollers. 41 which engage against the inwardly projecting edges oft-he upper flanges of the-tracksj32 and Secured to'the platformfiS is an electromotor 45 having the shaft it to which is Extending outwardly from. the platform .38 vis the'bracket l8 to which issecured the casting 49 provided at its upper end with the-horizontal bearing 50, in which is iournaled the shaft 51 having I secured on ts inwardly pro ect1ng end the' gear 52' adapted to mesh with the pinion 4:7,

' and at its outwardly extendingend the miter gear 53 adapted to meshwith the miter gear 54 which is secured to the upper end off the vertically dispcsed sleeve 55 jc'urnaled in the bearinghfi formed on the casting 49,, The lower end of the sleeve is provided with a flange 57 adapted tn engage with the lower surface of the bear b 56-, andprevent upward movement of said sleeve in said hearing The sleeve 55, is held against downward movement in the is provided with theears 64 having the vertical as 65 threug'h whici can scref pass and are threaded into; the flange 60.

By the above construction it will be seen that the bearingfil may be adjusted vertically to any desired position. Journaled in the bearing 61 is the lower end of the shaft 68 which carries on its extreme lower end a cutting member 69 preferably in the form 'of' a circular saw which abuts against the lower surface of the bearing 61. IA collar 70 is secured to .the shaft 68 and abuts against the upper surface of the bearing 61, thus preventing vertical movement of the shaft 68 in the bearing 61 but permitting rotary movement therein. The shaft 69 provided at its upper end with the vertically disposed groove 71 adapted to receive the 3 spline 72'secured in the sleeve 55. By the above "recited construction it will be seen that the cutting member 69 may be adjusted vertically toany desired degree by adjusting the bearing Ghthe shaft 68 sliding in] the sleeve'j55r but at all times being keyed thereto for rotory motiontherewith.v

The cutting member 69-is designed to form a horizontal saw cut in the block 10, and inasmuch asl'the' depth'of this cut is limited and can only penetrate into said block for the fractional part of its area. I

provide a second rotary cutter 75 preferably 1n the form of a circular saw, and operating 'is'secured the spur gear 89,'the opposites;

inwardly projecting end of the shaft 6 52 when the bracket'78 is moved upwardly diameter of these cutting members due to in unison with the cutter: 69 to form a verticalsaw cut in the block, which'will intersect the horizontal saw cut, thuscutting a slab out of the block. 1-

The saw blade 7 5 is secured to the outwardly projecting; end of shaft 7 6 which is "jeurnaled in the bearing 77 formed on the lower end of a vertically slidahle block 78 which is provided with a tongue 79 adapted to be uided in a roove 80 formed in the casting 429, A slot '81 is formedin the is secured the pinion 92 adapted to with the gear 89, which in turn meshes with "the gear 52. In order that the gear 89 may beadjusted 'prep'erly in mesh with the gear or downwardly the flangeB?) is provi r with the segmental slots 94: through which pass the cap screws 95, which are threaded into the swinging arm 8d and clamp the swinging arm 84 in adjusted position.

The cutting member 75 is adapted to be adjusted longitudinally with reference t0 the cutting member 69 as well as vertically in order to compensate for the decrease in wear and i*e-sharpening, ancl to this end the shaft 7 6 is provided with an annular flange 97 which is interposed between 'the'bearing 77 and the cuttingmember 75 and is pro vided with the outwardly extending threaded stem 98 which passes through an aperture 99 in said cutting membenand has threaded thereon a nut 100 which is adapted to clamp said cutting member firmly against said flange and to the shaft 76. When it is desired to adjust'the cutting member 75 outwardly to compensate for "its decrease diameter: washe (not shown) of'the de sired thickness is in'serted'betwe'en the flange 97 and the cutting member 7 5.- I

It will be seen by'the foregeim descrip.- tion that I have provided means for adjust- 7 ing the cutting members with reference to the work, as well as with reference to each other. I

The setting up and operation of myfde vice is as follows; By referring to Figs-v1 and 2, the frame 11 is first placed around the table or block 10 and adjusted with reference to the top surface ofsaid table'or v to the right, thereby cutting a slab of the top of a table or block, a pair of circu- H the desired depth and thickness from the table or block. I entirely from the table or block the platform is then moved back to the left until the saw blades clear the block; the carriage 35 is then advanced upwardly, as viewed from Fig. 1, and the operation is repeated.

The carriagei35 andthe'platform'38 are."

moved alternately until the entire surface of the table orplatform has'been leveled.

Nhat I claim is: i

1. A device of the class described, com-- prising a platform adapted to be moved both longitudinally and transversely across la r saws mounted thereon in adjustable rela-' tion to each other adapted to makeintersecting cuts simultaneously in said'table or block, means for supporting and guiding said platform, and means for rotating said have hereunto subscribed my name this 15th saws.

2. A device of the class described, comprising a platform adapted to be moved When this slab has been cut acioss the top of a block or table in several directions, a pair of circular saws mounted in adjustable relation to each other for ro.

tation on said platform and adapted to make horizontal and vertical intersecting cuts simultaneously in'said table or block, means for adjusting said saws with respect to each other and means forsupporting. and guiding said platform.

3. A device of the class described, com-' prising a frame adapted to be clamped to a table or blo'ck'adjacent the top thereof provided with-guide rails, a carriagemounted to be moved on said guide rails pl'Ovlded" with tracks arranged at rightangles to said guide rails, a platform mounted tobe moved on said tracks, a pair of rotary circular saws arranged at right angles with each other mounted on said platform, said'saws bein mounted in adjustable relation to eac other, and means for operating said circu 'lar saws simultaneously.

' 4. A device of the, class described, comprising a frame adapted to be clamped-to a table or block, a carriage. mounted for movement on said frame, a platform mounted for movement on said carriage, a pair of adjustable circular -saws :mounted on said table disposed at right'angles to each other,

and a motor mounted on said platform for operating said saws simultaneously.

In witness that I claim the foregomgI day of" August, 1918. 1

' ROBERT A. MADDOX. 

